CN107193073B - A kind of delustring depolarizer based on nanostructure - Google Patents
A kind of delustring depolarizer based on nanostructure Download PDFInfo
- Publication number
- CN107193073B CN107193073B CN201710336999.0A CN201710336999A CN107193073B CN 107193073 B CN107193073 B CN 107193073B CN 201710336999 A CN201710336999 A CN 201710336999A CN 107193073 B CN107193073 B CN 107193073B
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- Prior art keywords
- noble metal
- metal nano
- particle
- delustring
- nanostructure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
Abstract
The nanostructure that delustring is depolarized can be carried out to bias light the invention discloses a kind of, belong to field of nanometer technology.The structure is the linear array each other of one or more pairs of particles, couples generated enhancing absorption using the surface plasma body resonant vibration of two noble metal nano particles and to the dependence of incident light polarization state, reduces the intensity of incident light and depolarize to it.The invention has the advantages that the nanostructure can be used for inhibiting the interference of bias light in optical interference circuit.
Description
Technical field
The invention belongs to field of nanometer technology, are related to effect of the nanostructure to light, and being related specifically to can be simultaneously to light
Generate a kind of nanostructure that enhancing is absorbed and depolarized.
Background technique
After light and substance meet, wavefront changes, and is embodied in the direction of vibration of amplitude, phase and its electric field intensity
(i.e. polarization state).By measuring these parameters, the available measurement of pattern or optical property parameter of test substance.In order to obtain
The road signal, is concerned with, to obtain operational factors by highly sensitive and resolution ratio using the method for interference with reference path.
But it is not perfect due to optical device self performance, the interference light of background can be introduced to the reduction that measurement cause signal-to-noise ratio, back
The interference of scape light is a common problem in interferometry optics.In order to reduce the influence, the present invention provides one kind and is based on receiving
The delustring depolarizer of rice structure (is changed original by absorbing to reduce the energy of bias light and depolarize to transmitted light
Polarization state), reduce the generation of itself and the reference interference of light.
Summary of the invention
The present invention is coupled using the surface plasma resonance between two noble metal nano particles for incident light polarization direction
Dependence, a kind of nanostructure that can carry out light intensity attenuation simultaneously and polarization state changes is provided, is easy to real based on the structure
The miniaturization of existing device.
Technical solution of the present invention:
A kind of delustring depolarizer based on nanostructure, the enhancing near field generated using surface plasma body resonant vibration coupling
Absorbent properties inhibit to transmit background caused by incident light, which has the feature that is received by one or more pairs of noble metals
Rice corpuscles is arranged as linear structure along the connection of its axis, and incident light produces on the polarization direction for the axis for being parallel to linear structure
Raw enhancing is absorbed and is depolarized；The linear structure is to the intensity proportional that depolarizes of scattering light in Ksin (2 θ), and K is by surface
The scattering enhancing rate that plasma resonance coupling generates, θ are the polarization direction of incident light and the angle of particle pair.
The noble metal nano particles should comply with following characteristics to A: (1) it two noble metal nano particles is made of,
The partial size of two noble metal nano particles is identical or different；The spacing B and noble metal nano grain of (2) two noble metal nano particles
The ratio of diameter is less than 1；When the partial size difference of two noble metal nano particles, using big noble metal nano particles partial size；(3) institute
The noble metal nano particles stated are the solid particle of noble metal or noble metal shell package with surface plasmon resonance effect
Particle.
It repeats particle and multiple particles is generated to A to A；Two pairs or multipair A connections are arranged as linear structure, two adjacent particles
Pair spacing be equal to B or the partial size greater than maximum particle.
The linear structure expands to the arranged in parallel of multiple linear structures by a linear structure, and two adjacent
Most short particle distance not between the parallel construction in same linear structure is not less than the partial size of maximum particle.
The wavelength of the incident light is the surface plasma body resonant vibration wavelength of the nanostructure.
Beneficial effects of the present invention: delustring depolarizer of the invention is the linear array each other of one or more pairs of particles,
Generated enhancing is coupled using the surface plasma body resonant vibration of two noble metal nano particles to absorb and to incident light polarization state
Dependence, reduce the intensity of incident light and depolarize to it.The nanostructure can be used for inhibiting optical interference circuit
The interference of middle bias light.
Detailed description of the invention
Fig. 1 a is schematic diagram of the particle to A, and the spacing of two particles is B.
Fig. 1 b, which is multiple particles, is connected to each other the schematic diagram of arrangement to A.
Fig. 2 is the particle pair that two solid gold particles that partial size is 60nm, centre distance is 65nm are constituted, relative to list
For the normalized absorption cross-section and scattering section of a particle with the distribution of incident wavelength, incident light and particle divide the angle of axis
It Wei not be 0 °, 30 °, 60 °, 90 °.
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
Embodiment
A kind of delustring depolarizer based on nanostructure, which is characterized in that by one or more pairs of noble metal nano particles
It is arranged as linear structure along the connection of its axis, incident light generates enhancing on the polarization direction for the axis for being parallel to linear structure
It absorbs and depolarizes；The linear structure is to the intensity proportional that depolarizes of scattering light in Ksin (2 θ), and K is by surface plasma
The scattering enhancing rate that resonance body coupling generates, θ are the polarization direction of incident light and the angle of particle pair.
Such as above-mentioned a kind of a kind of delustring depolarizer based on nanostructure as described above, it is characterized in that your gold
Belong to nanoparticle to form to by two particles, the partial size of two particles of particle centering is solid gold nanoparticle, the grain of 60nm
Sub- spacing is 5nm；Particle is repeated to generation multiple particles pair；Two pairs or multipair can connect are arranged as linear structure, two phases
The spacing of neighbour pair is equal to 5nm or the diameter greater than maximum particle；The structure expands to multiple lines by a linear structure
Property structure it is arranged in parallel, and between two adjacent parallel constructions not on the same line most short particle distance be greater than maximum
The diameter of particle.
A kind of delustring depolarizer based on nanostructure, the wavelength of incident light are the surface plasma of the nanostructure
Resonant wavelength 532nm；As shown in Fig. 2, the photoextinction of the structure includes absorbing and scattering, relative to single particle, grain
Son is parallel to particle to the absorption intensity enhancing on axis to 4 to the polarization state to incident light；Relative to single particle, particle pair
The polarization state of incident light, which is parallel to particle, enhances to 12 times the scattering on axis；The structure is depolarizing intensity just to scattering light
Than being particle to axis and incident line in the scattering enhancing rate and sin (2 θ), θ generated by surface plasma body resonant vibration coupling
Polarised light angle.
Claims (5)
1. a kind of delustring depolarizer based on nanostructure, which is characterized in that generated using surface plasma body resonant vibration coupling
Enhancing near field absorbent properties inhibit to transmit background caused by incident light, which has the feature that by a pair of or more
Linear structure is arranged as along the connection of its axis to noble metal nano particles, incident light is inclined the axis for being parallel to linear structure
Enhancing is generated on vibration direction to absorb and depolarize；The linear structure is to the intensity proportional that depolarizes of scattering light in Ksin (2
θ), K is the scattering enhancing rate generated by surface plasma body resonant vibration coupling, and θ is the polarization direction of incident light and the folder of particle pair
Angle.
2. a kind of delustring depolarizer based on nanostructure according to claim 1, which is characterized in that your gold
Belonging to nanoparticle should comply with following characteristics to A: (1) being made of two noble metal nano particles, two noble metal nano particles
Partial size it is identical or different；The spacing B of (2) two noble metal nano particles and the ratio of noble metal nano partial size are less than 1；Two
When the partial size difference of noble metal nano particles, using big noble metal nano particles partial size；(3) noble metal nano particles described in
For the particle of the solid particle of noble metal or noble metal shell package with surface plasmon resonance effect.
3. a kind of delustring depolarizer based on nanostructure according to claim 2, which is characterized in that repeat particle pair
A generates multiple particles to A；Two pairs or multipair A connections are arranged as linear structure, and the spacing of two adjacent particles pair is equal to B or big
In the partial size of maximum particle.
4. a kind of delustring depolarizer based on nanostructure according to claim 1 or 3, which is characterized in that described
Linear structure expands to the arranged in parallel of multiple linear structures by a linear structure, and two adjacent not in same linear junction
Most short particle distance between parallel construction on structure is not less than the partial size of maximum particle.
5. a kind of delustring depolarizer based on nanostructure according to claim 1 to 3, which is characterized in that described
Incident light wavelength be the nanostructure surface plasma body resonant vibration wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710336999.0A CN107193073B (en) | 2017-05-17 | 2017-05-17 | A kind of delustring depolarizer based on nanostructure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710336999.0A CN107193073B (en) | 2017-05-17 | 2017-05-17 | A kind of delustring depolarizer based on nanostructure |
Publications (2)
| Publication Number | Publication Date |
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| CN107193073A CN107193073A (en) | 2017-09-22 |
| CN107193073B true CN107193073B (en) | 2019-11-19 |
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| CN201710336999.0A Expired - Fee Related CN107193073B (en) | 2017-05-17 | 2017-05-17 | A kind of delustring depolarizer based on nanostructure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101942B (en) * | 2017-05-17 | 2019-04-23 | 大连理工大学 | A kind of probe being used to polarize micro-imaging based on bimetal nano particles |
| CN109358037B (en) * | 2018-10-23 | 2020-12-11 | 大连理工大学 | Heterogeneous double-nanoparticle structure insensitive to polarization state of excitation light and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150247803A1 (en) * | 2014-02-28 | 2015-09-03 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Tunable Resonances from Conductively Coupled Plasmonic Nanorods |
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2017
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Non-Patent Citations (7)
| Title |
|---|
| Heterodimers: Plasmonic Properties of Mismatched Nanoparticle Pairs;Lisa V. Brown et.al.;《ACS NANO》;20100121;第4卷(第2期);第819-832页 * |
| Managing light polarization via plasmon–molecule interactions within an asymmetric metal nanoparticle trimer;Timur Shegai et.al.;《PNAS》;20081028;第105卷(第43期);第2606–2610页 * |
| Multiple-Particle Nanoantennas for Enormous Enhancement and Polarization Control of Light Emission;Zhipeng Li et.al.;《ACS NANO》;20090217;第3卷(第3期);第637–642页 * |
| Plasmon-enhanced depolarization of reflected light from arrays of nanoparticle dimers;Gary F. Walsh et.al.;《OPTICS EXPRESS》;20111010;第19卷(第21期);第21081-21090页 * |
| Polarization State of Light Scattered from Quantum Plasmonic Dimer Antennas;Longkun Yang et.al.;《ACS NANO》;20151223;第1580-1588页 * |
| Radiation Engineering of Optical Antennas for Maximum Field Enhancement;Tae Joon Seok et.al.;《Nano Letter》;20110707;第1580-1588页 * |
| Single-Molecule and Single-Particle-Based Correlation Studies between Localized Surface Plasmons of Dimeric Nanostructures with ∼1 nm Gap and Surface-Enhanced Raman Scattering;Haemi Lee et.al.;《Nano Letter》;20131120;第6113-6121页 * |
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Granted publication date: 20191119 |